What If a Single Word Could Describe and Judge at Once?

The Mystery of Judging Words

It’s lunchtime at school. Someone cuts in line and grabs the last slice of pizza. Alex frowns and says, “That was selfish.” Did Alex just describe what happened, or judge it? The surprising answer is both. Words like selfish have a strange double life. They tell you what happened (someone prioritized themselves over others) and they express a negative verdict. Generous, cruel, tactful, and courageous work the same way. Philosophers call these thick concepts. The term was introduced by Bernard Williams (1929–2003), who borrowed the idea of “thick description” from anthropology. In contrast, thin concepts are pure evaluations like good, bad, right, and wrong—they don’t come with built‑in specifics. Thick concepts pack evaluation and non‑evaluative description into a single word. Without them you’d have to say something like “She took the last pizza and that’s bad because…”—the thick word does both jobs at once. Understanding how thick concepts work might change how we think about the line between facts and values.

Can Facts Push You All the Way to a Judgment?

For centuries philosophers have thought there is a strict divide between is (facts) and ought (values). The Scottish thinker David Hume (1711–1776) famously warned that you cannot logically jump from a pure description of the world to a moral verdict—you need some value‑laden premise to bridge the is–ought gap. But the philosopher Philippa Foot (1920–2010) challenged this with thick concepts. She asked us to consider:

x causes offense by indicating a lack of respect.
So, x is rude.
Therefore, x is bad in a certain way.

Foot argued that if you accept the purely descriptive first line, you must also accept that the act is rude, because that’s simply what rude means. And since rude is evaluative, the conclusion puts a value on the act. That would mean a value‑laden claim follows straight from a fact—a hole in the is–ought gap. If she was right, some facts wouldn’t be value‑neutral.

R. M. Hare (1919–2002) pushed back with a clever move. He pointed to thick terms many people find objectionable—words like lewd that carry values they reject. Imagine the same reasoning:

x is an overt sexual display.
So, x is lewd.
Therefore, x is bad in a certain way.

Someone could agree that the act is an overt sexual display but refuse to condemn it. So the inference isn’t airtight. Perhaps lewd just conventionally signals a negative attitude—like putting scare quotes around it—and the evaluation can be detached. If that’s true for objectionable terms, the same might hold for rude. The is–ought gap might survive. This debate opened a bigger question: are thick terms inherently evaluative, or do they only seem that way because of how we use them?

The Anti-Disentangling Argument: Could an Outsider Spot “Rude”?

John McDowell (born 1942) went further. He asked us to imagine an outsider who cannot enter the evaluative outlook of a community. Suppose a community uses lewd to pass a negative judgment on explicit displays. The outsider, who finds nothing wrong with such displays, tries to learn the extension of lewd—the set of things insiders call lewd—by memorizing a neutral description like “overt sexual display.” McDowell argued this outsider would fail. They couldn’t reliably apply the word to new cases or recognize their mistakes, because what counts as lewd is shaped by the very values they lack. This is the anti-disentangling argument. It suggests that thick concepts can’t be cleanly separated into a pure description plus a separate evaluation. They are inseparable blends.

Many philosophers agree, but separabilists push back. They note that even if you need the evaluation to pick out which things are lewd, the two components could still be distinct in principle. Daniel Elstein and Thomas Hurka (writing in the early twenty‑first century) offer analyses like: “Courageous means good because it involves facing risk for the sake of worthy goals.” Here the evaluation (good) is separate from the description, but the description alone is too thin to settle the extension—evaluation drives it. So separabilists can accept that an outsider can’t learn the word without the values, without giving up the idea that the word contains two separate ingredients. The fight isn’t settled yet.

Where Does the Judgment Live? In the Word or in Us?

Even if thick concepts contain both sides, another puzzle remains: is the evaluation part of the word’s core meaning, or just something speakers communicate indirectly? Try saying, “He’s selfish, but there’s nothing bad about it.” That sounds very odd—almost contradictory. This suggests selfish might semantically express a negative judgment. Many philosophers accept this Semantic View.

Yet, there are contexts where the evaluation seems to fade without making the sentence false. Someone might say, “Whether or not chastity is a good thing, Isolde can truthfully be described as chaste.” Or, “The carnival wasn’t lewd this year—I hope it’s lewd next year.” Here the speaker clearly isn’t endorsing the usual negative view, but the word still makes sense. Such data—evaluations that project through negation (“She isn’t chaste” still hints at a value) yet can be suspended in careful speech—lead some philosophers to prefer Secondary Content Views. On these views, the evaluation is conveyed through mechanisms like presupposition, conventional implicature, or not‑at‑issue content that sits in the background of what’s said rather than being part of the literal truth‑conditions.

If evaluation is only backgrounded communication, thick terms might not challenge the is–ought gap as sharply. The debate is subtle: linguists and philosophers continue to examine cancellations, embeddings, and even experiments with speaker judgments. So far, no single view has knocked out all the others.

Why You Should Care: Facts, Values, and the Words You Use

Every time you call an action brave, lazy, cool, or unfair, you’re using a thick concept. You’re doing more than reporting the facts; you’re taking a stand on what’s admirable or shameful. If such words can’t be cleanly split into fact and value, then the crisp divide between objective science and personal morality starts to look blurry.

Bernard Williams imagined a “hypertraditional” society that uses only thick concepts and no thin ones like good or bad. When people in that society begin to reflect—asking “Is this really the right way to go on?”—they start using thin concepts. Williams argued that this reflection can destroy the knowledge their thick concepts carried. By stepping back, they might lose the ability to see the world through words like honorable or industrious. Others think you can keep the concepts and simply attach new values, like using selfish in a positive way.

This matters for understanding cross‑cultural disagreements: can we ever fully translate another culture’s ethical vocabulary, or does something always get lost? It also matters for your own vocabulary. The words you choose don’t just name the world—they color it with evaluation from the very start. Knowing that can make you a sharper thinker and a more careful speaker.

Think about it

1. Think of a word your friends use that describes someone while also passing judgment—like “drama queen” or “nerd.” Is the judgment part of the word itself, or just how your group tends to use it? How could you tell?
2. If someone from a culture that celebrates warrior acts calls the same behavior heroic that you call reckless, are you both just using words differently, or is one of you actually wrong? What would it take to settle the disagreement?
3. Imagine an alien who can observe human behavior perfectly but feels no emotions. Could that alien ever truly understand what kind means? What would still be missing?